9115 has 4 divisors (see below), whose sum is σ = 10944. Its totient is φ = 7288.

The previous prime is 9109. The next prime is 9127. The reversal of 9115 is 5119.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9115 is a prime.

It is a Duffinian number.

9115 is a lucky number.

It is a plaindrome in base 9 and base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907 + ... + 916.

It is an arithmetic number, because the mean of its divisors is an integer number (2736).

2⁹¹¹⁵ is an apocalyptic number.

9115 is a deficient number, since it is larger than the sum of its proper divisors (1829).

9115 is a wasteful number, since it uses less digits than its factorization.

9115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828.

The product of its digits is 45, while the sum is 16.

The square root of 9115 is about 95.4725091322. The cubic root of 9115 is about 20.8890596955.

It can be divided in two parts, 9 and 115, that multiplied together give a triangular number (1035 = T₄₅).

The spelling of 9115 in words is "nine thousand, one hundred fifteen".